Embossing machine



S. H. KAUFMANN Emsossme MACHINE Agril 9, 1929.

Filed Jan. 19, 1928 2 Sheets-Sheet April 9, 1929. s. H. KAUFMANN EMBOSS ING MACHINE Filed Jan. 19, 1928 2 Sheets-Sheet 59 nun m a "M Mm, wt i 0 m, a& Z

Patented Apr. 9, 1929.

SIEGFHIED HENRY KAUFMANN, F LGNDON, ENGLAND.

EMBOSSING MACHINE.

Application filed .l'enuery 1.9,. it i2" The object of A provide o machine tlfor speeding up end inlproving en'ihossing; and like ope rations as applied to leather and other goods or me.- teriels in which 3 end other patterns are applied to the goods or materials in foil or strip form. I

According to my nvention on eu'ihor me; machine consists ot a. sup yirt for the foil and means for teedinp; the toil to on embossing tool between which end a supportin surtees the article to he embossed is adopted to he pieced means being provided tor varying the space hetween the embossing tool and the said supportii'ip sin-loco, for instance by edit. ing the en'ihos 1g; tool towards and u rziy rom the supporting; surface, and means "up; the article to he en'ihossed hotween the supporting surface and the emhosm HIP; tool.

The preferred embodiment of my inven tion comprises o. suitable hose having a pillar thereon and. :1 horizon ly extended nrm slidololy mounted upon the pillar so the. .1 it can he tidjustohly o'lliiied thereto in any required position.

At the free end of this horizontally tilted orin i s mounted one end of o downwardly extending}; arm carrying at free end on embossing wheel so that it rests freely on :1 platform which is secured to the extended hose of the innchine.

This downwardly extending arm is on ranged any required angle and is provided at the lower eiul free end with :1. eylindri el embossing); lie or wheel which is suitably mounted so as to route and heor upon the well passing between its periphery and the nhit'iorni helow. This rototohle cylindriul die or wheel. is engrrzw ad upon its edges rith the desired pattern to he impressed upon the lVQdA and is hearted by on electric heitii 52; device :idupted to he connected. to or source of current so as to constantly 1i uintoin the surl'oce o t the die at it required teinpcrzrture.

'lhe enihossinp; cylindricul die or wheel is rotated by u. smell electric motor situated neer the top ot the downw y d iending erm and the power trunsinitced from the einhossin wheel. through suit- .t lznowj i. manner.

tie on i ctrie motor and the iierehly heme; eon-- the present invention is to o, ieriel N0. 247,972, and in Great Britain June 14, 1927.

nected to the some source of current, suitable resistances being introduced Where necessary. A. spring acts upon this depending; arm so as to tend to press its lower end toward the supporting surface for the articles to he emhossed.

The platform upon which the work travels beneath the embossing wheel may he pivotully arranged to more slightly up end down out of the horizontal to provide for various configurations of articles to he embossed, or a free running ploin surface Wheel may take the piece of the platform.

Spools 'l'or met-ullie foils or films and one or more suituhle feeding rollers are provided to curry onto the embossing Wheel the continuous strips of foil which may he composed of 0. suitable hacking and gold :foil or other suitable materials. This may he provided withn sized surface so that the foil or the like w'll adhere to the article or material being embossed.

The rototing; die which is readily removed and replaced by others will he pressed upon the surface of the Work with sullicient force to produce a clear impression of the pattern 02 the siufluce oi? the let ier or the like and will at the some time cause the gold or other foil to he forced into the impressed puttern as to adhere therein.

Iii-order that my invention me; he clearly understood and readily carried into e'tlcet, I have appended hereto two sheets of drewingrs illustrating on eu'ihodiment of some and a slight modification.

In the d swings fig. 1 is o trout elevation.

.lTi is a side elevation.

Fig.1. is e de'uil figure showing in section and plain the adjustable guide for articles to be embossed.

Fi 4-, deeoil View showing a. resiliently mounted. STIPPOli'lHg suritoce.

Fl g. 5 is z, di i-amniotic View of the various electrical eleu'icnts.

Fig.1. 3 a. detail side elerotiou showing o niodil'ied method of coiweying the foil to the embossing meinher.

Fig. 7 is :1 front elevation of Fig. 6, and

Fig. 8 21 detail view of the means for heetino" euih. ssinn tool.

ltete ring to the drawings the machine is i'uounted upon. :1. hose 1 provided with on upst; ndinp; pillzu 2 upon which is slideole up trod. do'ii no horizontal arm 3, rt tleod screw 4i 'th'wmded through it loo; 5 on the end of the arm 3' providing .the requisite traversing mechanism for raising or lowering the arm 3,

any suitable mean'sffor instance a handle 6, being provided for rotat ng the screw 4. A

feather 7 engaging-in the endrof the arm prevents oscillationot' the arm. r v

The free endof the arm 3 is formed with a cylindrical portion 3 aboutwhich-is engaged a clamp 78 partof which is secured to the upper end of an arm Qwhich carries the embossing tool at its lower end. The cmbossin g tool is acylindrical member .10 mounted on a spindle 11 supportedin a bearing 12 at the 3 lower end of the arm 9. The embossing tool 10 is adaptedto have'the strip foil fed over it so .thatithe foilrpasses'between the embossing 'toolx10f and a supporting plate 13"for' the articles'to be embossed. The supply of foil gisc-arriedi by a spool14 detaehably mounted "ona pin15 e'Xtending'laterally from a bracket 17 secured to the arm 9. A coiled spring 18 on the pin lfiabuts against the hubof the spool 14 toprevent thespool from rotating freely in order to'ensure that the strip foil 19 willfbe maintainedjtaut as it travels over the embossing tool, 10. j V a The foil 19 is passed from the spool 14 between a guide 20 and the embossing roller 10, ithefoil passing partially around the periphery of the embossingroller so as to be pressed against the article to be embossed. The usual backing 22 for the foil is carried from the em- 1 bossing roller over atake-ott. roller 21 from whence the backing can be collected. The roller 21 is carried b the lower end of an arm '21. which is pivotal y supported adjacent its upper end b a pin 23carried by one end of a bar 24 whic 1' has at its centre a square hole "whereby it-is engaged over a square pin 25 projecting laterally from 1 the arm 9, a set screw-26 holding the bar i against movement by a tensionspring'27 whereby the guide 20 and tlie take-ofi roller 21, are maintained pressed against theembossing roller 10. The

periphery of the roller 21' is'prefe'rably channelled to ensure a proper guiding of the backing 22 from theembossing roller 10. To prei :The 60 f vent undue pressure of the guide 20 against the .embossingroller 10 a screw 20 is threaded through the a'i1n 2O and abuts against the bar 24, thereby providing an adjustment for the-guide 20 relative to the embossing roller requisite rotation is imparted to the embossingroller by mounting on the spindle 11 "a bevel gear Wheel 28 with which meshes a like. Wheel 29 fixed to the. lower .end of a spindle 3Q driven from an electric motor 31 mountedflon the upperend of the arm 9. The

spindle driven at a' reduced speed rela 7 32. The requisite pressure of the embossing roller 10 on the article being embossed can be obtained 111 a resilient manner to allow for irregularities of the articles, by means of a strong tensionspring 33 connected to a convenient part of the arm 9 and a bracket 34 secured to the horizontal arm 3. The arm 9 can be raised against the influence of the spring 33 by means of a cam 35 carried by a pin 36 extending through a lug 37 on the arm 3, a handle 38 enabling the pin to be rotated so that the periphery of the cam presses against the arm 9 and moves it slightly upwards.

' As is well known embossing foil. is generally mounted on paper, being, the backing 22, and it is desirable to heat the roller 10 in order to melt the size provided on the surface of the foil and which causes it to adhere to the article to be embossed. A convenient method of effecting this is by utilizing the same source of current employed for the electric motor 31 'for conveying current to a resistance element 39, the flex for this purpose being indicated by the reference numeral 40. A strip of metal 41 of good heat conductivity is surrounded by heat resistant material 42 (see Fig. 8) and is provided with a boss surrounding the spindle 11 and projecting into a recess in the embossin roller, so as to conduct the heat thereto. To enable the operator to regulate the heat of the embossing roller, a variable resistance 43 which can be a slider coil carried in the arm 3 as shown'in Fig. 2, is provided, a slider knob 43 enabling the operator to readily regulate the heat. The temperature of the embossing roller can be approximately ascertained by engaging the bu lb 44 of a thermometer 45 with the boss on the strip 41, one end of the thermometer being supported in a bracket 45 secured to the arm 9, and the lower end of the thermometer being engaged in a bracket 47.

The articles to be embossed can be guided along the plate 13 in the desired path against a guide bar 48 (see Fig. 3) which has a lateral limb 48 giving it a T configuration. The limb 48 is slotted to receive a pair of screws 49 which are inserted in a selected pair of a number of holes 50 in the plate 13. The bar 48 may be arcuate, or other configuration according to the path the embossing has to take.

To enable boxes and other articles which have inclined surfaces to be embossed the plate 13 can be angularly adjustable by supportin it on pivot pins passed throng 1 lugs '51 and 52 on the plate 13 and base 1 respectively. One of these pins is threaded and extended to receive a turning handle 52" As an alternative, or addition, to the spring 33, the plate 13 can. be mounted upon a number of compression springs 53 (see Fig. 4) to press the articles against the embossing tool.

In Figs. 6 and 7 is shown a modified arrangement of take-ott roller .41. In this arrangement the take-oil roller 21 is carried by the lower end of a sleeve 5st which is adjustable vertically through an arm 55 which is secured to the arm 9 by engaging a square hole in the arm 55 over the projection carried by the arm 9, a set screw 57 holding the arm in position, and a set screw 58 holding; the sleeve 54L in selected position. The foil 19 and backing 22 are carried between the rollers 21 and l0. An idler roller 59 is dis posed just above the roller 21 and rotatable i on a pin (50 which is lined to a rod slidable but not rotatabie in the sleeve This rod is springmounted and adjustable by a feed screw (31 rotatable by meansoit a milled head 32. This enables the roller 21 to press resiliently on the en'ibossing' roller 10 and the roller 59 to engage the roller 21 to convey away the paper backing.

A, plug-in electric connector 63 can be can 'ed by the arm 3 to enable the motor 31 and heater 39 to be connected to an available source of current, a fixed resistance 64 and another 65 being provided for the motor and heater circuits when necessary. The motor resistance and control switch is preferably arranged to be toot controlled so as to leave the operators hands tree for mani 'iulation of the article to be embossed.

I claim 1. In an embossing machine, a rotary embossing tool, a supporting arm on which the tool is mounted, an electric motor mounted on the arm for rotating the tool at the desired speed, electrical heating means for kee 'iing the tool at the correct working tcn'iperature and means for exerting a resilient pressure between the rotary tool and the work.

In an embossing machine, a rotaii'yemlz-ossingr tool, a supporting arm on which the tool is mounted, an electric motor mounted. on the arm for rotating the tool at the desired speed, a support for a spool oat toil and means tor feeding the toil automatically to the peri 'ihery Off the tool, electrical heating means tor keeping the tool at the correct \VOl'klllO' ten'ipeiature and means for exerting; a resilient pressure between the rotary tool and the work.

3. in an embossing; machine, a rotary embossing tool, a supporting arm on which the col is mounted, an electric motor mounted on ie arm for rotating the tool, at the desired ed, a support tor a spool ot toil and means feeding the toil automatically to the periphery of the tool, electrical heating means for liieeping the tool at the correct working temperature, means for exerting a resilient pressure between the rotary tool and the work, and a toot operated switch for regulating and controlling the electric motor.

i. In an en'ibossing; machine, a rotary embossing; tool, a supporting arm on which the tool is mounted, an electric motor mounted on the arm for rotating, the tool at the desired speed, a support tor a spool ot toil and means tor feeding the toil. automatically to the periphery of the tool, electrical heating means for keeping the tool at the, correct worlszingg' tempeintm'e, means for exerting a resilient pr sin-e between the rotary tool and the work, and a foot operated switch for regulatimg; and controliin the electric motor.

5. in an embossing machine, a base, a vertical guide thereon, a tired arm mounted on the guide, means tor raising and lowering the arm, a de endii'ie arm mounted on the fixed arm, a re ry embossing tool arranged at the tree end oi? the depending arm, an ele'c tric motor on the arm, gearing: and a shaft for transmitting the drive to the embossing tool, a srupporting table for the work on the base of the machine and means for exerting a resilient pr Jsure between the embossing tool and the work on the table. i

(S. In an embossing machine, a base, a vertical guide thereon, a fixed arm mounted on the guide, means tor raising; and lowering the arm. a depending arm mounted on the fixed arm, a rotary embossing; tool arranged at the free end of the dependin arm, an elec' tric motor on the arm, gearing and a shaft for ti'riiisiii'itt'iuo; the drive to the embossing tool, a sup mrtinc; table for the work on the base oi the machine, means tor exerting a re siiient pressure between tlut' embossing tool and the work on the table, a support tor a spool ot toil, guides to conduct the toil to the periphery oi. the embossing tool. and a, elee c heating element arranged on the depend and comm]micatingr its heat to the enuio 11, 1 tool through a cmidiuztor hav ing a projection engaging in recessed boss on the tool.

7. In an embossing;- machine, a base, a vertical guide thereon, a tilted arm mounted on the guide, means tor raisingand lowering the arm, a depending arm mounted on the fixed arm, a rotary embossing tool arranged at the tree end of the depending arm, an electric motor on the arm, gearing: and a shalt tor transmitting the d rive to the embossing); tool, a supporting table for the work on the base of the machine, means for exerting; a re silient pressure between the embossing tool and the w rk on the table, and a toot operated. switch ttor controlling the electric motor.

8. in an en'ibossine' i'naehine, a bi se, a vertil guide thereon, a fixed arm mounted on the guide, means for raising and lowering); the arm, a depending arm mounted on the lined arm, a rotary embossing; tool arranged at the free end oi": the depending arm, an electric motor on the arm,'-gearing and a shaft for I I transmitting the drive to the embossing tool,

a supporting table for the work on the base of the machine,.means for exerting a resilient :pressure between the'embossing tool and the work onthe table, a support for aspool of foil, guides to conduct the foil to the periphcry of the embossingtool, an electric heating trio-motor.

" elementfarranged on thedependingarm and 1 the arm, a depending arm mounted on the ,fixed arm, a rotary embossing tool arrange at the free endof the depending arm, an electric motor or the arm, gearing and a shaft for transmitting thcdrive to the embossing tool,

asupporting table for the work on the base ofthe machine, means for exerting a resilient pressure between the embossing tool and the workon the table,a foot'operated switch for controlling the electric motor, a variable re- .sjistance in thecircuit of the heating element and a thermometer adjacent the embossing tool to indicate the temperature thereof.

10. In an embossing machine, a base, a vertical guide thereon, a fixed arm mounted on the'guide, means for raising and lowering the arm, a depending arm mounted on the' fixed arm, a rotary embossin tool arranged at the free end of the depending arm, an electric mo'toron the arm, gearing and a shaft for transmitting th drive to the embossing tool,

a supporting table for the work on the base of the machine, means for exerting a resilient pressure between theembossing tool and the work onv the table, a support fora spool of foil, guides to conduct-the foil to theperiph cry of the embossingtool, an electric heating elementarranged on the depending arm and commnnicat-1ng its heatto the embossing tool through a conductor having a projection 'engaging in a recessed boss on the toohaf foot operated switch for controllingthefelectric motor, a variableresistance 111 the circuit of theheating element and a thermometer ad- I jacent theen'ibossing tool to indicate the temperature thereof.

11.1A machine for embossing leather and other like materials comprising a supporting surfacefor articles to be embossed, a support for an arm, means for moving the said support towards and away from the supporting '7 "surface, a rotary spindle at the lower end of said-arm connected for rotation to an electric njotorg'an electrical heating device adjacent said sp1ndle, atake-o1f roller located so asto 1 contact with. the periphery of the embossing 7 tool, a guide for the foil located so as to be close to the embossingtool,spring means for urging the said take-off roller and the guide towards the embossing tool, and means for regulating the tOlIlPOliltlllB of the embossing tool.

12. A machine for embossing leather and other like materials comprising a supporting surface for articles to be embossed, a support for an arm, means for moving the said support towards and away from the supportingsurface, a rotary spindle at the lower end of said arm connected for rotation to an electric motor, an electrical hcatin device adjacent said spindle, a take-off roller located so as to contact with the periphery of the embossing tool, a guide for'the foil located so as to be close to the embossing tool. spring means for urging the said take-off roller and the guide towards the embossing tool, means for regulating the temperature of the embossing tool, and a takeoff roller for withdrawing the foil backing, located close to the embossing tooland adjustable relatively thereto.

13. In an embossing machine, a base, a vertical guide thereon, a fixed laterally extending arm mounted thereon, screw means for raising and lowering said arm on its guide, a

i downwardly depending arm mounted to i swivel about the end of the fixed arm, a table for the work located below the end of the downwardly depending arm, a spring acting .to urge the end of the arm toward the table, a rotary embossing tool mounted at the lower end of the depending arm, an electric motor mounted on this arm, gearing and a shaft for driving the embossing tool from the motor, an electric heating element mounted on the arm, a strip of conducting material extending from the element close to the embossing tool, a. projecting boss on the strip engaging in a recess in one face of the tool and means for controlling the temperature of the tool and the operation of the electric motor.

14,-. In an embossing machine, a base, a vertical guide thereon, a fixed laterally extendingarm mounted thereon, screw means for raising and lowering said arm on its guide, a downwardly depending arm mounted to swivel about the end of the fixed arm, a table for the work located below the end of the downwardly depending arm, a spring acting to urge the end of the arm toward the table, a rotary embossing tool, mounted at the lower end of the depending arm, an electric vmotor-mounted on this arm, gearing and a shaft for driving the embossing tool from the motor, an electric heating element mounted on the arm, a strip of conducting material extending from the element close to the embossing tool, a projecting boss on the strip ongaging in a recess in one face of the tool, a variable resistance and a therinon'ietcr for regulating and indicating the temperature of the embossingtool and a foot operated switch for controlling the electric motor.

to i e the end oi the arm toward the table, a rotary emhossn tool mounted at the lower end of the dope ding arm, an electric motor mounted on this arm, gearin and a shaft tor driving the en'ihossing tool from the motor, an electric heating element mounted on the arm, a strip of conducting material e);-

tendir g from the element close to the emhossinntool, a projecting boss on the strip on gaging in a recess in one face oi the tool, leans for controlling the ten'lperature of the sol and the operation oil the electric motor, I v.pport tor a spool of foil, a guide for coning the foil to the periphery of the emng tool, take-oil roller adjustahly mounted close to the embossing tool for re moving the :toil hacking.

l6. ln an embossing machine, a base, a vertical guide thereon, a hired laterally extending arm mounted thereon, screw means for raising and lowering); said arm on guide, a downwardly depending arn'i mounted to swivel about the end 015? the lined arm, a table tor the work located below tne end of the downwardly d pending arm, a swing acting to urge the end of the arm toward the table, a rotary ember tool, mounted at the lower end of the d i i g arm, an electric motor mounted on this arm, gearin g and a shaft for driving the embossing tool from the motor, an electric heating element mounted on the arm, a strip of conducting material extending from the elementclose to the en'ihossing tool, a projecting boss on the strip engaging in a recess in one face of the tool, a variable resistance and a thermometer for regulating and indicating the temperature oi" the emhossing tool, a toot operated switch for controlling the electric motor, a support for a spool oi. toil, a guide for conducting the toil to the periphery of the embossing tool, and a take-oil roller adjustahly mounted close to the embossing tool tor removing the foil hacking.

17. in an embossing machine, a

support "tor the Work, an embossing tool, a

sup port for said embossing tool movable away from and towards said work support, means for continuously feeding toil to said embossing tool, means for adjusting said tool support towards and away from said Work support and for lining the same in adjusted position, means for exerting a resilient pressure hetircen said tool and the Work on said Work support and means for guiding the Work on said support.

18. In an embossing machine, an adjustable table, a tool support adjustable towards and away from said table, an embossing tool irried by said support, means for continuouslyiteeding "toil. to said embossing tool and means for exerting a resilient pressure hctween said embossing tool and the Work on said table.

SllEtl-FRIED HENRY KAUFMANN. 

